ArticleHernia : the journal of hernias and abdominal wall surgery2026
Anterior to posterior preoperative risk assessment of abdominal thickness compared to BMI in ventral hernias.
Article in Hernia : the journal of hernias and abdominal wall surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundObesity is a known risk factor for recurrence following ventral hernia repair. BMI is often used to define obesity, and we have previously shown a BMI > 33.67 associated with higher recurrence. In 2023, AMA policy highlighted BMI as an imperfect measurement of obesity and recommended limitations to its use. This study's objective was to evaluate the association between anterior-to-posterior abdominal wall depth (APD) in CT measurements with hernia recurrence as an alternative to BMI.
methodsData was retrospectively collected for patients from a county healthcare system, undergoing elective ventral hernia repair from 2014 to 2020 with fascial defects > 4 cm and preoperative CT scans. CART analysis was performed to determine the APD threshold for recurrence. Receiver operating characteristic (ROC) curve analysis was performed to compare APD and BMI as predictors of recurrence. Kaplan-Meier analysis was used to depict the recurrence-free survival period.
results267 patients met our inclusion criteria. Mean APD at L4 was 27.67 cm. APD of 29.7 cm was determined as the threshold for recurrence. Area under the curve for APD > 29.7 cm and BMI > 33.67 were 0.617 (p = 0.046) and 0.577 (p=0.189) respectively. Five-year recurrence free survival was 70% for APD ≤ 29.7 cm and 37% for APD > 29.7 cm.
conclusionIn our study, the use of APD CT measurements provided an objective, reproducible, and rapid method to augment preoperative evaluation for visceral obesity and the risk for hernia recurrence that was not reliant on traditional BMI, and, in fact, improved upon a simple BMI threshold.
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